I have a N7189 MT6589 with JB 4.2.3 //e2001_v89_jdt1fwvga. It arrived rooted but without CWMrecovery
Problem was the image very fuzzy due to low res combined with ow refresh (only 42.3 Hz as per Antutu)
I tried to reflash with a bunch of roms and I am stucked in white screen. I tried most of the screens listed on needrom for this model and screen. All listed for N7189 do not work. I could fool them using vanzo89_wet_jb2.bin preloader but do not turn on screen.
I also tried some of the old 6577 uboot.bin files that appear to be compatible (resolution)
I only can get the flash complete with rom from 9500 with preloader ......vanzo89_wet_jb2.bin.
Screen is white but I can hear the start-up music and after boot screen turns black,
upon pressing power it gets white...etc.